1.

कि 0 ™Fan LU+ 4975 3v = =2 e b

Answer»

tan^(-1)((2x+3x)/(1-6x*x)) = tan^(-1)(1) 5x/(1-6x*x) = 1 5x = 1-6x*x 6x*x+5x-1 = 0 6x*x+6x-x-1 = 0 6x(x+1)-1(x+1) = 0 (6x-1)(x+1) = 0 so x=-1 or 1/6



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